A Series Of Unfortunate Boyfriends

Every guy I have ever dated has had some strange or scary flaw, I don't do it on purpose I swear, they just find me. I have dated people with problems holding onto reality, guys who have explosive rage disorders, narcissistic men, obsessive clingy men, possessive and jealous men and those who are just a bit creepy. Why aren't nice normal guys attracted to me? I'm not odd but I'm starting to wonder if I have something about me that has caused be to attract ten years worth of unfortunate men :(